Description:Matched Pair of Premium Vintage Soviet 6N23P REFLEKTOR Saratov Dual Triodes - Rare Early "Silver Shield" Edition - Manufactured in May 1973 - NOS (New Old Stock) - Holy Grail Audio Tubes (E88CC / 6922 / ECC88 Counterpart)Up for sale is an absolute audiophile treasure and an early historical masterpiece — a closely matched vintage pair of legendary dual-triode vacuum tubes, model 6N23P, featuring the highly coveted "Silver Shield" internal construction. Manufactured by the world-famous Reflektor (Saratov) factory in the USSR in May 1973. Both tubes are in pristine New Old Stock (NOS) condition.The Secret of the Early 1973 "Silver Shield" Production:
Among global High-End audiophiles and tube-rolling experts, the early 1973 Saratov-made 6N23P "Silver Shield" is a legendary open secret. Featuring a bright, matte silver/nickel-plated internal separator shield between the two triode sections, these tubes possess the exact same internal structural geometry, materials, and breathtaking sonic properties as the famous ultra-expensive 1975 6N23P-EV blocks.The 6N23P tube is a direct and premium drop-in replacement for international E88CC / 6922 / CCa / ECC88 / 6DJ8 tube families. They are heavily sought after as a major sound upgrade for high-end Hi-Fi tube preamplifiers, reference headphone amplifiers, and top-tier DACs (such as Audio Note, Audio Research, Cary Audio, and custom master builds). They are celebrated worldwide for delivering a spectacular holographic three-dimensional soundstage, a highly transparent liquid midrange, and crystal-clear high-frequency extension with incredible microphonic immunity. Finding a clean, factory-matched pair from this exact early 1973 "Silver Shield" batch is a true collector's dream.Key Features and Specifications:

• Brand: Reflektor Saratov (Made in USSR)
• Model: 6N23P / 6Н23П / "Silver Shield" Edition (E88CC / 6922 / 6DJ8 drop-in replacement)
• Tube Type: High-Quality Low-Noise Dual Triode (Premium Audio Grade)
• Base Type: Standard 9-Pin Miniature (Noval, B9A)
• Production Date Code: V-73 (May 1973 - Perfectly matched from the same early 1973 production run)
• Internal Construction: Distinctive bright silver-nickel internal shield plates, robust halo getter, gray anodes
• Condition Grade: NOS (New Old Stock in protective packaging)
• Physical State: Thick shiny silver getters, pristine metal internal plates, perfectly straight pins, and original factory etched factory logo on glass

Condition:

• Status: New Old Stock (NOS).
• Visual state: Pristine collectible condition. Beautifully preserved glass envelopes, perfect internal structural symmetry, clean unbent pins, exactly as shown in the comprehensive close-up photos.
• Testing: Visually inspected and guaranteed authentic vintage Soviet production with full emission.

Perfect For:

• Reference upgrades for High-End Hi-Fi tube preamplifiers, DACs, and headphone amplifiers (Tube Rolling)
• Seamless, cost-effective alternative to ultra-expensive vintage Siemens CCa or Telefunken E88CC tubes while maintaining the exact same sonic performance
• Custom DIY boutique audiophile master builds requiring high-transconductance dual triodes
• An investment-grade addition to any serious vintage vacuum tube archive

You will receive the exact matched pair of 2 authentic Reflektor 6N23P "Silver Shield" tubes from the May 1973 batch pictured in this listing.Shipping and Packaging:
Worldwide shipping with a tracking number provided. Premium vintage glass vacuum tubes require maximum protection during international transit; therefore, each tube will be individually wrapped in multiple thick layers of shock-absorbing bubble wrap and shipped inside a rigid, oversized cardboard shipping box to guarantee absolute safety and avoid any glass, plate, or pin damage during delivery.If you have any questions, feel free to ask before buying!